diff --git a/setup.py b/setup.py
index 01401184..2a883215 100644
--- a/setup.py
+++ b/setup.py
@@ -72,6 +72,7 @@ setup(
             'hub.imports.construction',
             'hub.imports.construction.helpers',
             'hub.imports.energy_systems',
+            'hub.imports.energy_systems.helpers',
             'hub.imports.geometry',
             'hub.imports.geometry.citygml_classes',
             'hub.imports.geometry.helpers',